The men wear masks. Their guns are drawn on the bank manager. She nervously recites the alarm code, and the tumblers within the huge vault fall. The timing and execution are brilliant. It could be the perfect heist. But as the huge sum of cash is stolen, so too is one man's heart - and that man is the Prince of Thieves Charlestown, a blue-collar Boston neighbourhood, produces more bank robbers and armoured car thieves than any square mile in the world. Bank manager Claire Keesey is taken hostage during a robbery. She is released, but Doug MacRay, the brains behind the tough, tight-knit crew of thieves, is shocked to realise that he has fallen for her. They meet, and it soon becomes clear that the attraction is mutual. But Claire has another admirer: FBI agent Adam Frawley. Meanwhile, Doug's gang pulls off another job. Frustrated by their ingenuity and brazen ambition, Frawley begins to zero in on the gang.